Roasted Garlic and Cherry Tomato Pasta Sauce Recipe

Ingredients

• 1 whole head garlic
• 6 tablespoons olive oil, divided
• 1.25 teaspoons salt, divided
• 0.75 cup diced white onion
• 0.5 teaspoon ground cayenne
• 0.5 pound heirloom cherry tomatoes
• 0.25 cup dry white wine
• 1.5 cups low-sodium chicken broth, or as needed
• 3 tablespoons unsalted butter